levitsky [1] filed a deletion request for python2-pyteomics [2]: A user in the comments requested that I delete this package. It is meant for python2, which is not supported, and depends on python2-pip, which has been deleted already. [1] https://aur.archlinux.org/account/levitsky/ [2] https://aur.archlinux.org/pkgbase/python2-pyteomics/